Royal 55C Converta

In 1960, Zenith produced a limited quantity of speaker boxes called the Converta (Royal 55C) to go with the Royal 50.  It’s purpose was to convert the shirt pocket sized radio into a table radio that produced a bigger sound through it’s 4″ speaker.

It measures 6″ high, 7.5″ wide, and 3″ deep and weighs only 18 ounces.  It works well, producing a “bigger” sound, but with the radio installed, it becomes quite top-heavy and not very stable and with a fall or two, the thin legs would break, making it even less stable.  It’s cost was $39.95 – $44.95 which included the radio (I have a 1962 price guide that quotes these speaker boxes were a $10 option). Not a hot seller.  They are made of brittle plastic and as a result, these are very difficult to find today in good condition.

Converta Speaker Box

3 thoughts on “Royal 55C Converta”

  1. I currently (May 9, 2015) have one of these in good condition for sale on eBay, along with 3 Zenith Royal transistor radios. eBay item number 181740271422

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